Oklahoma Sooners: Patrick Peterson

NORMAN, Okla. -- Former Oklahoma receiver Kenny Stills went to the NFL combine and opened eyes with his time in the 40-yard dash. His 4.38 tied him for fourth fastest among receivers as he displayed speed which was rarely shown during his time in crimson and cream.

But Stills knows he still has plenty of work to do if he hopes to become a high pick in the 2013 NFL draft. How does he know? Because he asked.

Matt Ryerson/US PresswireFormer Oklahoma receiver Kenny Stills admits that teams asked about his use of Twitter at the NFL combine.

“Every team I talk to we try to do a good job of, after every interview, asking them what can we work on?” Stills said following his limited participation in OU’s pro day on Wednesday. “Every team [said] just be prepared to be pressed, every play, at the line of scrimmage. I’ve been working on a lot of MMA stuff, hand fighting, trying to be more violent, more vicious at the line of scrimmage and be able to handle that stuff at the next level.”

The NFL’s elite cornerbacks are getting bigger and bigger as teams try to adjust to bigger receivers like Calvin Johnson, who can create mismatches. Thus physical cornerbacks like Seattle’s Richard Sherman and Arizona’s Patrick Peterson are becoming more valuable.

The progression is forcing NFL receivers to become more physical and more violent at the line of scrimmage. With that goal in mind, Stills has been working out with NFL insider Jay Glazer, the co-owner of MMAthletics who puts NFL players through MMA training in the offseason.

“The MMA stuff has been really good, I’m enjoying that,” Stills said. “To be able to work with Jay Glazer, he’s a total meathead, he loves all that stuff. I hit him as hard as I can and he’s like ‘Yeah!’ It’s been fun for me to release that anger without putting pads on.”